[INFO] crate ffmpeg-screen-recorder 1.0.7 is already in cache
[INFO] extracting crate ffmpeg-screen-recorder 1.0.7 into work/ex/beta-1.38-1/sources/1.37.0/reg/ffmpeg-screen-recorder/1.0.7
[INFO] extracting crate ffmpeg-screen-recorder 1.0.7 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/ffmpeg-screen-recorder/1.0.7
[INFO] validating manifest of ffmpeg-screen-recorder-1.0.7 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ffmpeg-screen-recorder-1.0.7 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ffmpeg-screen-recorder-1.0.7
[INFO] finished frobbing ffmpeg-screen-recorder-1.0.7
[INFO] frobbed toml for ffmpeg-screen-recorder-1.0.7 written to work/ex/beta-1.38-1/sources/1.37.0/reg/ffmpeg-screen-recorder/1.0.7/Cargo.toml
[INFO] started frobbing ffmpeg-screen-recorder-1.0.7
[INFO] finished frobbing ffmpeg-screen-recorder-1.0.7
[INFO] frobbed toml for ffmpeg-screen-recorder-1.0.7 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/ffmpeg-screen-recorder/1.0.7/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing ffmpeg-screen-recorder-1.0.7 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/ffmpeg-screen-recorder/1.0.7:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 2ee585ff957cd954118b84c59acca1b59bbb75f00d7aa9aa8655a09b613a23b7
[INFO] running `"docker" "start" "-a" "2ee585ff957cd954118b84c59acca1b59bbb75f00d7aa9aa8655a09b613a23b7"`
[INFO] [stderr]    Compiling nix v0.11.1
[INFO] [stderr]    Compiling subprocess v0.1.18
[INFO] [stderr]    Compiling ffmpeg-screen-recorder v1.0.7 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:87:17
[INFO] [stderr]    |
[INFO] [stderr] 87 |             let mut path = Path::new(ffmpeg_path);
[INFO] [stderr]    |                 ----^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.00s
[INFO] running `"docker" "inspect" "2ee585ff957cd954118b84c59acca1b59bbb75f00d7aa9aa8655a09b613a23b7"`
[INFO] running `"docker" "rm" "-f" "2ee585ff957cd954118b84c59acca1b59bbb75f00d7aa9aa8655a09b613a23b7"`
[INFO] [stdout] 2ee585ff957cd954118b84c59acca1b59bbb75f00d7aa9aa8655a09b613a23b7
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/ffmpeg-screen-recorder/1.0.7:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 8c934a866e76db821fcbc346e6c524370d980ada60e314b3944089aa1c1f63f5
[INFO] running `"docker" "start" "-a" "8c934a866e76db821fcbc346e6c524370d980ada60e314b3944089aa1c1f63f5"`
[INFO] [stderr]    Compiling ffmpeg-screen-recorder v1.0.7 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:87:17
[INFO] [stderr]    |
[INFO] [stderr] 87 |             let mut path = Path::new(ffmpeg_path);
[INFO] [stderr]    |                 ----^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.96s
[INFO] running `"docker" "inspect" "8c934a866e76db821fcbc346e6c524370d980ada60e314b3944089aa1c1f63f5"`
[INFO] running `"docker" "rm" "-f" "8c934a866e76db821fcbc346e6c524370d980ada60e314b3944089aa1c1f63f5"`
[INFO] [stdout] 8c934a866e76db821fcbc346e6c524370d980ada60e314b3944089aa1c1f63f5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/ffmpeg-screen-recorder/1.0.7:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] fe4dd3f9e16ed178b9914b14cf97744aa7cf41680377526842281e74203e9246
[INFO] running `"docker" "start" "-a" "fe4dd3f9e16ed178b9914b14cf97744aa7cf41680377526842281e74203e9246"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/ffmpeg_screen_recorder-0985975a64b84b7b
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/ffmpeg_screen_recorder-da7cc1110e90b9c9
[INFO] [stderr]    Doc-tests ffmpeg-screen-recorder
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "fe4dd3f9e16ed178b9914b14cf97744aa7cf41680377526842281e74203e9246"`
[INFO] running `"docker" "rm" "-f" "fe4dd3f9e16ed178b9914b14cf97744aa7cf41680377526842281e74203e9246"`
[INFO] [stdout] fe4dd3f9e16ed178b9914b14cf97744aa7cf41680377526842281e74203e9246